In a vacuum chamber on Earth, a heavy steel block and a light plastic coin are dropped from the same height at the same time. Both objects fall with the exact same constant acceleration. Which statement explains why they accelerate at the exact same rate?
In a vacuum, the gravitational force acting on all objects is zero.
The gravitational force (weight) acting on an object is directly proportional to its mass.
The gravitational force (weight) acting on an object is inversely proportional to its mass.
Both objects must have the same weight because they are in the same location.
209 exam-style questions on CIE IGCSE Physics Mass and weight, covering Mass and weight. Each one has a worked solution and a mark scheme showing where the marks go.